Ink-dot printer

Typewriting machines – Typing by other than type-face or type-die – Character formation by impact

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Details

400470, 101 9305, 346140R, B41J 310

Patent

active

047767120

ABSTRACT:
An ink-dot printer comprises a recording paper, at least one needle disposed in one side the recording paper and movable between a rest position remote from the recording paper and a projected position close to the recording paper, a driving mechanism for moving the needle between the rest position and the projected position, a driving control unit electrically connected to the driving mechanism so as to supply a driving control signal for controlling the movement of the needle to the driving mechanism, an ink supply mechanism adapted to supply ink to the distal end portion of the needle on the recording sheet side so that the ink attaches to the distal end portion when the needle is located in the rest position, an electrode disposed in another side of the recording paper and facing the distal end portion of the needle, and voltage control unit for applying between the needle and the electrode an ink flying voltage with respect to the supply of the driving control signal from the driving control unit to the driving mechanism the ink flying voltage generating between the needle and the electrode an ink flying electric field of an intensity such that the ink is drawn from the distal end portion of the needle to the recording paper to form an ink dot on the recording paper as the needle closes to the electrode than in the rest position.

REFERENCES:
patent: 4545694 (1985-10-01), Niromiya et al.
patent: 4552469 (1985-11-01), Tsuge et al.
patent: 4599629 (1986-07-01), Tsuge et al.
Patent Abstracts of Japan, vol. 9, No. 11 (M-351) (1734), 18th Jan. 1985; & JP-A-59 159 355 (Matsushita Denki Sangyo KK) 8/9/84 (Cat. X).

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